Combined ruler and solar cell calculator



FIG. 1 is a top plan view of a combined ruler and solar cell calculator, showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof, the rear being substantially a mirror image thereto;

FIG. 4 is a right end elevational view thereof;

FIG. 5 is a left end elevational view thereof. 

The ornamental design for a combined ruler and solar cell calculator, as shown and described. 